Microsoft Secure

Microsoft Secure

Cookie-controlled PHP webshells: A stealthy tradecraft in Linux hosting environments

Cookie-gated PHP webshells use obfuscation, php-fpm execution, and cron-based persistence to evade detection in Linux hosting environments. This post examines how this tradecraft conceals execution behind specially crafted HTTP cookies.
The post Cookie-controlled PHP webshells: A stealthy tradecraft in Linux hosting environments appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure

Mitigating the Axios npm supply chain compromise

On March 31, 2026, the popular HTTP client Axios experienced a supply chain attack, causing two newly published npm packages for version updates to download from command and control (C2) that Microsoft Threat Intelligence has attributed to the North Korean state actor Sapphire Sleet. Although the malicious versions are no longer available for download, since Axios is one of the most widely used HTTP clients in the JavaScript ecosystem, this compromise exposed hundreds to potentially millions of users.
The post Mitigating the Axios npm supply chain compromise appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure

WhatsApp malware campaign delivers VBScript and MSI backdoors

A malware campaign uses WhatsApp messages to deliver VBS scripts that initiate a multi-stage infection chain. The attack leverages renamed Windows tools and cloud-hosted payloads to install MSI backdoors and maintain persistent access to compromised systems.
The post WhatsApp malware campaign delivers VBScript and MSI backdoors appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure

WhatsApp malware campaign delivers VBS payloads and MSI backdoors

A malware campaign uses WhatsApp messages to deliver VBS scripts that initiate a multi-stage infection chain. The attack leverages renamed Windows tools and cloud-hosted payloads to install MSI backdoors and maintain persistent access to compromised systems.
The post WhatsApp malware campaign delivers VBS payloads and MSI backdoors appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure

How Microsoft Defender protects high-value assets in real-world attack scenarios

High-value assets including domain controllers, web servers, and identity infrastructure are frequent targets in sophisticated attacks. Microsoft Defender applies asset-aware protection using Microsoft Security Exposure Management to detect and block threats against these critical systems. This article explores real-world attack scenarios and defense techniques.
The post How Microsoft Defender protects high-value assets in real-world attack scenarios appeared first on Microsoft Security Blog. READ MORE HERE…

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